CVE-2024-43889padata: Fix possible divide-by-0 panic in padata_mt_helper()
- 5.5MediumCVSS base score
- 0.24%Exploitation in 30 daysEPSS · top 85% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: padata: Fix possible divide-by-0 panic in padata_mt_helper() We are hit with a not easily reproducible divide-by-0 panic in padata.c at bootup time. [ 10.017908] Oops: divide error: 0000 1 PREEMPT SMP NOPTI [ 10.017908] CPU: 26 PID: 2627 Comm: kworker/u1666:1 Not tainted 6.10.0-15.el10.x86_64 #1 [ 10.017908] Hardware name: Lenovo ThinkSystem SR950 [7X12CTO1WW]/[7X12CTO1WW], BIOS [PSE140J-2.30] 07/20/2021 [ 10.017908] Workqueue: events_unbound padata_mt_helper [ 10.017908] RIP: 0010:padata_mt_helper+0x39/0xb0 : [ 10.017963] Call Trace: [ 10.017968] <TASK> [ 10.018004] ? padata_mt_helper+0x39/0xb0 [ 10.018084] process_one_work+0x174/0x330 [ 10.018093] worker_thread+0x266/0x3a0 [ 10.018111] kthread+0xcf/0x100 [ 10.018124] ret_from_fork+0x31/0x50 [ 10.018138] ret_from_fork_asm+0x1a/0x30 [ 10.018147] </TASK> Looking at the padata_mt_helper() function, the only way a divide-by-0 panic can happen is when ps->chunk_size is 0. The way that chunk_size is initialized in padata_do_multithreaded(), chunk_size can be 0 when the min_chunk in the passed-in padata_mt_job structure is 0. Fix this divide-by-0 panic by making sure that chunk_size will be at least 1 no matter what the input parameters are.
Timeline
ID reserved
By Linux
- 9 days later
· 9 days later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 004ed42638f4428e70ead59d170f3d17ff761a0f – < ab8b397d5997d8c37610252528edc54bebf9f6d3
- affected 004ed42638f4428e70ead59d170f3d17ff761a0f – < 8f5ffd2af7274853ff91d6cd62541191d9fbd10d
- affected 004ed42638f4428e70ead59d170f3d17ff761a0f – < a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f
- affected 004ed42638f4428e70ead59d170f3d17ff761a0f – < 924f788c906dccaca30acab86c7124371e1d6f2c
- affected 004ed42638f4428e70ead59d170f3d17ff761a0f – < da0ffe84fcc1627a7dff82c80b823b94236af905
- affected 004ed42638f4428e70ead59d170f3d17ff761a0f – < 6d45e1c948a8b7ed6ceddb14319af69424db730c
- affected 5.8
- unaffected < 5.8
- unaffected 5.10.224 – ≤ 5.10.*
- unaffected 5.15.165 – ≤ 5.15.*
- unaffected 6.1.105 – ≤ 6.1.*
- unaffected 6.6.46 – ≤ 6.6.*
- unaffected 6.10.5 – ≤ 6.10.*
- unaffected 6.11 – ≤ *
References
References11
- https://git.kernel.org/stable/c/ab8b397d5997d8c37610252528edc54bebf9f6d3 (opens in a new tab)
- https://git.kernel.org/stable/c/8f5ffd2af7274853ff91d6cd62541191d9fbd10d (opens in a new tab)
- https://git.kernel.org/stable/c/a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f (opens in a new tab)
- https://git.kernel.org/stable/c/924f788c906dccaca30acab86c7124371e1d6f2c (opens in a new tab)
- https://git.kernel.org/stable/c/da0ffe84fcc1627a7dff82c80b823b94236af905 (opens in a new tab)
- https://git.kernel.org/stable/c/6d45e1c948a8b7ed6ceddb14319af69424db730c (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-40539 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-43889)Record last updated .